The spread of innovations within formal and informal farmers groups: Evidence from rural communities of semi-arid Eastern Africa By Dietrich Darr, Jürgen Pretzsch Warning: Undefined variable $post_id in /home/afnetwork/public_html/wp-content/themes/agroforest/taxonomy-database_tag.php on line 37 Tagged with: Agroforestry innovations, Diffusion of knowledge, Farmer groups, Innovative potential, Interpersonal interaction, Rural communities, Semi-structured questionnaires, Social networks